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/*
* Copyright (C) 2021-2022 Kristóf Marussy <kristof@marussy.com>
*
* This file is part of Sophie.
*
* Sophie is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, version 3.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
* SPDX-License-Identifier: AGPL-3.0-only
*/
import { throttle } from 'lodash';
import { observer } from 'mobx-react-lite';
import Box from '@mui/material/Box';
import React, {
useCallback,
useEffect,
useRef,
useState,
} from 'react';
import type { BrowserViewBounds } from '@sophie/shared';
import { useStore } from './StoreProvider';
export const BrowserViewPlaceholder = observer(function BrowserViewPlaceholder() {
const {
shared: {
browserViewBounds: {
x: storeX,
y: storeY,
width: storeWidth,
height: storeHeight,
},
},
setBrowserViewBounds,
} = useStore();
const [
{
x: currentX,
y: currentY,
width: currentWidth,
height: currentHeight,
},
setBounds,
] = useState<BrowserViewBounds>({
x: 0,
y: 0,
width: 0,
height: 0,
});
useEffect(() => {
if (storeX !== currentX
|| storeY !== currentY
|| storeWidth !== currentWidth
|| storeHeight !== currentHeight) {
setBrowserViewBounds({
x: currentX,
y: currentY,
width: currentWidth,
height: currentHeight,
});
}
}, [
storeX,
storeY,
storeWidth,
storeHeight,
setBrowserViewBounds,
currentX,
currentY,
currentWidth,
currentHeight,
]);
const onResize = useCallback(throttle(([boxEntry]: ResizeObserverEntry[]) => {
if (boxEntry) {
const {
x,
y,
width,
height,
} = boxEntry.target.getBoundingClientRect();
setBounds({
x,
y,
width,
height,
});
}
}, 100), [setBounds]);
const resizeObserverRef = useRef<ResizeObserver | null>(null);
const ref = useCallback((box: HTMLElement | null) => {
if (resizeObserverRef.current !== null) {
resizeObserverRef.current.disconnect();
}
if (box === null) {
resizeObserverRef.current = null;
return;
}
resizeObserverRef.current = new ResizeObserver(onResize);
resizeObserverRef.current.observe(box);
}, [onResize, resizeObserverRef]);
return (
<Box
sx={{
flex: 1,
}}
ref={ref}
/>
)
});
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